I'm having lots of issues trying to use JRiver with a new Marantz that has HEOS. It seems that JRiver and HEOS do not play nice. I had the same problems on a Denon with HEOS, but the Marantz seems worse. I'm streaming via DLNA, but everything is very sluggish. There is about a 10-20 second delay between tapping a button (like "stop" or "start") and a response by the stereo. If I pause and then hit play again, it goes back to the beginning of the song. So, essentially, there is no pausing. Also, as I posted elsewhere, the fast-forward feature is not available. My option is to play my music using the HEOS app, but it is not even close to being as nice as JRiver with JRemote on an iPad. I'm going to be searching for ways to overcome the HEOS issues. I might have to go with some sort of HPTC rather than play via DLNA. Funny thing is that I had a much cheaper and older AVR that worked for years with none of these issues!